Home / 10,890.63-15,024.72-6,407.28

Finding the Fourth Proportional to 10,890.63, 15,024.72 and 6,407.28

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Solution

The fourth proportional to 10,890.63, 15,024.72 and 6,407.28 is: 8,839.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.63 : 15,024.72 = 6,407.28 : x
  2. Step 2: Convert to fraction form
    10,890.63/15,024.72 = 6,407.28/x
  3. Step 3: Cross multiply
    10,890.63x = 15,024.72 × 6,407.28
  4. Step 4: Simplify right side
    10,890.63x = 96,267,587.96
  5. Step 5: Solve for x
    x = 96,267,587.96/10,890.63
  6. Step 6: Final answer
    x = 8,839.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.